(PhysOrg.com) -- A new study of thousands of species of plants and animals suggests new species may arise from rare events instead of through an accumulation of small changes made in response to changes in the environment.
If you have a Facebook account, you are likely to have seen someone pour an ice bucket on themselves in the name of raising awareness for amyotropic lateral sclerosis (ALS). ALS is a disease that affects nerve cells in the ...
Cell & Microbiology
Sep 29, 2014
0
0
Evolutionary theorist Stephen Jay Gould is famous for describing the evolution of humans and other conscious beings as a chance accident of history. If we could go back millions of years and "run the tape of life again," ...
Evolution
Jun 8, 2015
174
1811
A mutation in the spike protein of SARS-CoV-2—one of several genetic mutations in the concerning variants that have emerged in the United Kingdom, South Africa, and Brazil—makes the virus up to eight times more infectious ...
Cell & Microbiology
Feb 17, 2021
2
2210
Mutations are the raw material of evolution. Scientists at the Max Planck Institute for Developmental Biology in Tubingen, Germany, and Indiana University in Bloomington have now been able to measure for the first time directly ...
Biotechnology
Jan 1, 2010
246
0
Penguins that died 44,000 years ago in Antarctica have provided extraordinary frozen DNA samples that challenge the accuracy of traditional genetic aging measurements, and suggest those approaches have been routinely underestimating ...
Evolution
Nov 10, 2009
16
0
A genetic mutation may have helped modern humans adapt to smoke exposure from fires and perhaps sparked an evolutionary advantage over their archaic competitors, including Neandertals, according to a team of researchers.
Evolution
Aug 2, 2016
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751
Researchers at the University of Toronto examined fungi in the mucus of patients with cystic fibrosis and discovered how one particularly cunning fungal species has evolved to defend itself against neighbouring bacteria.
Cell & Microbiology
Nov 20, 2015
0
1235
(Phys.org) -- In trying to figure out when humans and apes diverged, researchers have had to rely on fossil evidence and the rates of mutations that occur when both groups propagated their species. The problem is, up till ...
The offspring of two horses will be a horse, and the offspring of two donkeys will be a donkey. But the offspring of a horse and a donkey will be a mule. And most mules are infertile, so mules are not a species.
Plants & Animals
Nov 24, 2021
1
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